Paper-making machine



April 16, 1929. A. E. BRIDGE PAPER MAKING MACHINE Filed May 3, 1928 v A TTORNEY R m M w.

Patented Apr. 16, 1929,

v UNITED STATES PATENT OFFICE.

ADAM E. BRIDGE, OF FRANKLIN, OHIO, ASSIGNOR TO THE BLACK-CLAWSON COMPANY, OF HAMILTON, OHIO, A CORPORATION OF OHIO.

PAPER-MAKIN G MACHINE Application filed May 3, 1928. Serial No. 274,889.

This invention relates to paper-making machinery or the like and more particularly to beater-rolls such as are used in the mixing and beating of paper or other stock.

One object of the invention is the provision of a beater roll having blades and blade-spacing elements, and having outward end projections to provide retaining walls at the ends of the roll.-

A- further object of the invention is the provision of a heater roll of the character mentioned in which the blades are provided with pins which are retained by recesses in the spacing elements so that outward and lateral movements of the blades are prevented.

Other objects and advantages of the invention will be apparent from the following description and from the accompanying drawings in which Fig. l is a view of a heater roll having blades and blade-spacing elements embodying the present invention, some of the bladespacing elements being removed;

Fig. 2 is a top plan view of one of the blade-spacing elements;

' Fig. 3 is an end view thereof;

Fig. 4 is a section on the line 4-4 of Fig. 5 looking in the direction of the bladespacing element the wood-spacing strip being removed;

Fig. 5 is a section on the line 55 of Fig. 4; and I Fig. 6 is a detail of an end of the blades.

Referring more particularly to the drawings by reference numerals, the beater roll is shown as comprising a rotatable member 10 adapted to be rotatably supported on the shaft portion 11. The member 10 is provided with end portions 12 and 13 and intermediate portions 14 of any suitable number dependent upon the width of the roll forming spaced-apart walls, on the peripheral portions of which are arranged a series of spaced blades 16, these blades being preferably loosely seated at their ends in radial 'slots 19 in the end portions 12 and 13 of the roll member 10. These slots, however, may be dispensed with if desired. The blades are of substantially rectangular form as indicated in dotted lines in Fig. 4 and as shown in Fig. 6, and the intermediate portions of the blades rest on the cylindrical portion of one outer peripheral surface of the intermediate wall portions 14 of the member. 15 indicates the customarybanger iron which is fixed to the end of the roll for clearing stock from the roll end.

The blades are maintained in their proper spaced-apart relation by blade-spacing elements 20. These elements are preferably formed each as an integral metal casting of non or other suitable material, and as shown, they comprise a body plate 21 extending throughout the length of the roll and havmg a width at 22 approximately equal to or slightly less than the distance between adacent blades at this position. Below position 22 the blade-spacing elements are provided with radially extending surfaces 23 which are slightly spaced away from the inner portions of the blades so that spacing strips 24 of wood or similar material may be inserted between the inner portions of the blades and the blade-spacing elements and these strips compressed to provide for the firm engagement between the blades and the blade-spacing elements. The side walls 25 and 26 on which the surfaces 23 are provided depend from the body plate 21 at its sides and rest upon the portions 12, 13 and 14 of the roll member, and the blade-spacing elements are adapted to be held tightly in place on the roll member by means of bolts 27 the heads of which may be received in depressions 28 in the body plate 21.

At each end of the blade-spacing elements is provided an outwardly extending projection 30 preferably formed as an integral part of the blade-spacing elements. These projections 30 extend to points adjacent the outer ends of the blades and extend between the ends of adjacent blades to prevent the stock or pulp mixture, being beaten by the roll, from flowing out laterally between adjacent blades during the operation of the roll. The projections 30 are braced preferably by means of bracket plates 31 which are also preferably integral with the projections '30 and the body part of the blade-spacin elements. These bracket plates 31 are pre .erably spaced a small distance away from the outer blade port-ions, so that the blade portions are held firmly in place by the" wood strips interposed between the inner ends of the blades and the blade-spacing elements as previously described. By reason of ing a lateral flow from between the blades,

the beater roll is more eflicient in its operation, and the stock or material acted upon is more effectively treated and beaten by the blades as the latter are moved past the stationary surface or surfaces with which they cooperate.

The blades are preferably maintained .in position by means of pins 37, provided in the end portions of the blades and projecting somewhat from the sides thereof as shown in Figs. 4, 5 and 6. These pins are engaged by surfaces 38, 39 and 40 of the blade-spacing elements, these surfaces providing a downwardly facing notch adjacent each end of a blade-spacing element ada ted to engage the pins to hold the blades in t eir proper positions seated on the roll.

member. Due to the engagement of the surfaces 38 and 40 with the pins, lateral motion of the blade is prevented, and in the assembly rof the blades and blade-spacing elementsfthe blades are first applied andthe blade-spacing elements, With the thin wood strips are then inserted towards the center of the roll, so that the pins on the blades are engaged by the notches at the ends of the blade-spaclng elements. The blade-spacing elements are then drawn in towards the center of the roll by the bolts 27, to compress the thin woodstrips, and draw the blade-spacing elements down to their proper positions in engagement with the peripheral surfaces of the roll member. When the blade-spacing elements are drawn down tightly the blades are firmly located in their proper positions and are restrained against outward or other movement.

-While the form of apparatus herein described constitutes a preferred embodiment of the invention, it is to be understood that the invention is not limited to this precise form of apparatus, and that changes may be made therein without departing from the scope of the invention which is defined in the appended claims.

What is claimed is:

1. A beater roll of the class described comprising a rotatable member, a series of spaced blades positioned around the peripheral surface thereof, spacing elements between the blades, and means rovided on the ends of said elements extending between adjacent blades and .to points adjacent the outer edges of the blades to form lateral retaining walls at the ends of the roll.

2. -A- beater roll of the class described comprising a rotatable member, a series of spaced blades positioned around the peripheral surface thereof, a single integral metal spacing element between adjacent blades, means for fixing each element in place on the rotatable member, said blades having provisions adapted to be engaged and retained by said elements to retain the blades in position, said spacing elements having outward end projections extending between adjacent blades to points adjacent the outer ends of the blades.

3. A beater roll of the class described comprising a rotatable member, a series of spaced blades positioned therearound, said blades having pins projecting laterally therefrom adjacent their end portions, inintegral metal spacing elements positioned between adjacent blades, said elements havin outward projections extending between adjacent blades to points adjacent the outer edges of the blades at their ends to provide retaining walls at the ends of the roll, said.

ADAM E. BRIDGE. 

